Breeding strategy

No. farms

Hormone treatments*

AFS (d)

No. straws

FSCR (%)

Age at

conception (d)

Cost per heifer (£)

Natural service only

20

0

517

0

Unknown†

553

32.31

AI conventional semen only no bull

11

1

473

1 - 8

69 ± 14.1 (40% - 90%)

504

51.92

AI sexed semen only no bull

3

1

461

2 - 5

60 ± 10 (50% - 70%)

507

119.80

AI conventional and sexed semen no bull

15

0

505

1 - 5

65 ± 17.6 (4% - 100%)

535

58.40

AI conventional semen only + bull

20

0

455

1 - 3

66 ± 10.5 (4% - 95%)

464

74.67

AI sexed semen only + bull

14

8

461

1 - 3

51 ± 17.3 (2% - 80%)

507

102.61

AI conventional and sexed semen + bull

18

1

454

1 - 7

55 ± 15.0 (4% - 90%)

490

83.50

Total

101

11